Teacher: In this task, you will be shown an incorrect English sentence. You need to generate a corrected form of the input sentence.
Teacher: Now, understand the problem? If you are still confused, see the following example:
The car's wheel are loose.
Solution: The car's wheel is loose.
Reason: The instance of are is replaced by the word is. This makes the sentence grammatically correct.

Now, solve this instance: Third , although the reading passage claims dinosaurs because their bone structure is similar to endothermy , scientist assume that it is not the case . 
Student:
Third , although the book passage claims that dinosaurs have similar bone structure due to endothermy , scientists assume that this is not the case . 